Compressor.



I. LEVBY.

COMPRESSOR.

APrLIoATIoN FILED APR.14, mo.

977,662 mmm Dec. e, 1910.

a exams-annu@ t Patented Dec. 6, 1910.

3 SHEETS-SHEET 2.

VJ. LEVEY. COMPRESSOR.

APPLICATION FILED APR. 14, 1910. 977,662.

J. LEVEY.

COMPRESSOR.

APPLIOATION FILED 112.14, 1910.

Patented Dec. 6, 1910.

3 SHEETS-SHEET 3.

UNITED. STATES, PATENT oniiioii.

JOHN LEVEY, OF CHICAGO, ILLINOIS.

coMPnnssoR.

Specification of Letters' Pa tent.

Paten-ted Deo. 6, 1910.

Application-filed'Aprl 14, 1910. Serial No. 555,367..

To will whom, 'it may concern: l

Beit known that I, JOHN Lnvnr,a citizen offthe United States, residingiat Chicago, in the county of Cook and lState of Illinois, haver invented a new and useful Inipi'otcnient in Compressors, of which the followl*and by which relatively high compression of the air or gas operated on may be effected.

Referring to the` 'accompanying drawings-Figure 1 is a View in elevation of a compressor constructed'in accordance with my invention, the compressor-proper. being` shownin longitudinal sectional elevation,

,i the section being taken at the line 1 onllig.

3 Ei 2i` is, a.4 transverse section-taken througiIthe compressor, the pistonofrth'e compressor being shown in one, offthe .positions it-assuiiies while operating. Eig. 3, is ai sect`on taken atthe line 3 -oii Fig. land d inA 'the direction ofthe arrow, this` View, showing thepistonjn another positionand illustratedJin elevation. Fig. P is afsection takeny at the linetonY Fig..l land; viewedfin the direction Vof the arrow.k Fig.,- 5 isa View in vertical sectional elevationfof the rotary piston-,cylinder employed; and Fig. 6ta topplan View of the cylinder. of Fig. withportions `thereof bioken.awa iy to discloseA a detail.

The base ofvthe compressor represented atl() supports the casing 1l of the `compressor-'proper which is formed of a centralcylindrical sect-ion lQ-and end-sections l?) centrallyapertured as ,represented at 14 and 15,tlie sectionylQ being secured between the sections'l as by bolts 1G. 'The section 12l contains a series of communicating chambers l'g'lforniing a water-jacket for this section through which Water-supplied through the pipe-18 andA discharged through the pipe 19, circulates- The section 1Q contains a centrally-disposed opening 20 of cylindrical shape, the wall` of which is represented at `21,1 this walljwhich `forms with the inner Wallsbof thesections 13, a cylindrical chainberv22, being `recessed latene sidethereof on yitsiniier surface as .indicated at 23 into which rccessapipe Q4. leading-from the sourceof lfinidto bel compressed, opens.

Thehsection l2 near its upper end a slight ydistance to the right of its iid' tical `center through it (Fig. 2), contains an opening- `into which the reduced end ot: a check-valve 26 extends, this 'Yalrebeing secured at its annMarly-flanged portion 'tolhe section 12, as by bolts .28. The check-Valve shownis of aV well-known constiuctioinits 'valve-disk 29 on the "stemSOheing downw-.irdly siiringpressed against a seat 3l which contains an opening 32 communicating with the interior ofthe chamber QQand withr the-compressed Huid-outlet. .through which the compressed fluid is conducted away from. the conipresser.

Journaled in` the bearingV 15'- is a` hollow shaftd carrying on.- its. inner-midi a cylindrical member- 3.5 which iszlocatedinI thechamher 22; andf contains-.air opening 36,

preferably.circulan in `cross-section, through: iitrand .extei-iding at, rightangles'to the -a Xis upon which it: rota-tese'as.:hereinafter;v described, the .opening 3 Gaat f its opposite endl p'ortions. being annularly recessed as indicated atY 371; to form, annular shoulders Located in th'eopposite endsotth'ea opening 3.6 rin the memberY are bushingsy 39', the:

outer, ends-ofwhich are conveXed toca-use them to conform to-A the Wall.` 2l against wihi'ch] they` are held inV Contact asy hereinafter described,v during they rotationof themember These bushingsy are fianged'fonf theirperipheries at their outerv end-s. as represented-at 40 to presentishoulderslll .whichY opposethek shouldersj38'as clearlyv represented in Fig. 1, theiiiner-ends of 'these bushings being'r provided on their. circumlference with packing-rings 42,'Which bear against the n innen surface of `the wall Tof '.thef: opening Reciprocably"coninedinf the, bushings 39 is a ycy'ilindrical piston -iwhich is o' less length than the diameter-of'the` 'member and v,is provided `witlif packii'ig-l rings 44' on its -outcrl surface toward 'its opposite ends, which bear against lthe inner-` suit'acc ofl the bushings-39. i y

The piston v-13 whichf is preferably hollow,

has .its ends .rounded to conform to-fthewalll 2l of the chamber 22 as illustrated in Fig. -2

and is formedv intermediate its `ends with .a

pair of spaced. transversely-extending cross- -membersstforming guides in Which'a block 46 is slidably confined-this block containing an opening 47. forming vafbearing fora crank-arm 48 lined on av non-rotaryshatt' 49'keyed inthe opening 14 Aandaliningfwith the axis upon which the sleeve 34 'irotatesyy the crank 48 projecting through an opening 50 in the member 35 and into a recess 5l in the side of the piston. The crank is so arranged as to cause its pin 48 to be positioned directly above the center of the shaft cariyiiigit as illustrated in Figs. 2 and 3, and the parts described are so proportioned as to cause the upper end of the piston 43, when the latter assumes verticalvposition during its operation as hereinafter described, to be substantially in contact with the wall 21 as represented in Fig. 3.

The member is rotated through the medium of a shaft 52 fixed at one end in the sleeve 34 as by pins 53 and journaled at its opposite end in a bearing 54 supported on the base 10, the shaft in the particular .construction illustrated carryingtight and loose pulleys 55 and 56, respectively, which may have belt connection with any suitable power device, though the member 35 may be rotated in any other suitable manner.

The operation of t-he compressor is as follows: Rotation of the shaft 52 rotates the shaft 34 and consequently the member 35, in the direction indicated by thearrow in Fig. 2, the iston 43 in this operation reciprocating in contact wth the inner surfaces of the bushings 39, by reason of its eccentric connection, through the mediumbf' the crank 48, with the shaft 49, for alternately moving the ends of the piston toward the wall 21l The parts of the construction are so proportionedand'arranged that, as the ends of ,the pistou 43 are successively moved to a pov sitioii in which they oppose the recess 23 -`in the section l2, they will be withdrawn inwardly into the member 3,5,.to' their fullest extent, the fluid to be compiessed entering the pockets thus formed b'etweenthe inner 'walls of the bushings 3) and the ends of the piston 43; and when moved to a position in which they opposethe outlet 32 will be at the limit of theirl outward movement, in

vwhich they substantially contact with the wall 21 of the chamber 22. ril`hus, asthe member 35 is rotated, the piston 43 'recipro- Cates back and forth therein.and permits the fluid to enter the pockets formed as described when opposed to the recesses 23, in which pockets it is highly compressed by the action of the piston in moving outwardly to ward the wall 21 against therbody of fluid confined therein. The act lof' compressing the fluid continues until the pocket containing it opposes the outlet 32, whereupon the fluid in' highly compressed condition' discharges through this outlet against' the disk 2f) which opens and permits the fluid to pass through the outlet 28.. Itwill'b'e under Ystood that the fluid will begin to exhaustr from the pockets'inz which 1it iscompr'essed as soonas thev edge of the pocket'passes4 the wall of the openings 32, atwhich kpoint they end of the piston in its movement will be spaced a slight distance from the wall 21, the piston moving into substantialengagement with the wall 21 before it passes the opening 32, whereby substantially all of the fluid introduced into the pockets will vbe forced through the outlet 32. It will furthermore be noted that the ends of the cylinder, in which the piston 43 moves, alternately operate by the action of the piston to receive a charge of fluid for compression by the piston as the latter-moves outwardly, and to discharge the same after compression through the outlet 32. -To maintain the outer ends of the bushings 39 in. sufliciently close contact with the wall 21 to prevent the escape of the fluid from the pockets formed inthe member 35 by the action of the piston as described, while the fluid is undergoin compression, I provide coiled springs 5% confined in sockets 58 in the member 35 which bear against the shouldered portions 41 of the bushings 39 and tend to force the ends of these bushings against the Wall 21; and to supplement the action of these springs I provide passages 59 in the bushings 39 which open into the interior of the latter and into the joints formed between the shouldered portions 38 and 41 of the mem-y ber 35 and bushings 39, respectively, through which passages the fluid While undergoing lcompression is; v,permitted to enter vthese joints and exert 'a' pressure between the surfaces 38 and 41 sufficient torforee the bushf ings 39 against the wall 21 for preventing the escape of the compressed fluid from the interior of these bushings when moving from receiving to discharging position. Thus, as

the pressure of the fluid in the member 35 increases as it is carried toward the outlet 32, the pressure tending to force the bushings outward correspondingly increases,

with the result of maintaining the desired l frictional engagement of the `outer ends of the bushings with the wall 21 for permitting the compression of the fluid to an exceedingly high degreef As a means for preventing the piston from turning in the bushings, I provide: in the in l ner end of the shaft 34 an inwardly-projecting circular ended blockl G0 which extends into engagement with the parallel walls 61 of a longitudinally-extending recess 62v in the adjacent side ofthe-piston 43.

It will be manifest 'that a compressor constructed iiiaccordance4 with my invention is capable of not only exerting the' desired force for compressing the fluid to a high degree, but serves to effectually imprison the fluidfso compressed until it has been carried tothe position `for discharge. f y

wWhile I'have described the action ofithe i gas undergoing compression against the bushings for forcing them outwardly as sup-f plemenfal to that of the springs, I do not i Wish to he understood as intending to limit my invention to `the employment of mechanical means for Forcing the bushings outly' in connection with the action of the ainst said bushings, as suoli meehancal .means may he dispensed with and.V the o' s: alone force the bushings with such pres si e against the wall 121 as to insure the desired compression.

hat l' claim. as non', and desire to secure .lfters Patent, isml. A compressor comprisin n. a casing` containing' a t umher haring eylindriral Wall provided with an inlet for he fluid trihe compressed and with anoul'let r the compres ed tl-nidi a rotary pistonflin-ilcr in saulfchamher provided at its nds "with ringshaped members surround ing; the opening through said cylinder and contextual :it their oule. ids and adapted to fr in eonihin a- 'near inst said cylind ril wall, means 'for ioni' said ringshaped inemhers into enj 4 ement with said cylindrical wall.v a pislon reciprorahly confined insaid cylinder, and means operating to reciprocate said pis-v ton durinrT the rotation of said cylinder for rompre "sing luid introduced into the cylinder through said inlet.

i2. A compressor comprising, in combination, a easing containing a chamber having cal Wall pi'oridecl-n'ith an inlet'l'or esseri and an outlet. t'or ti fluid, a rotary piston-eylinin said chamber the inner surface ot which toward its opposite ends is lined with :e Abushings having their' outer ends eonvexednnd movahly supported in said cylinder?. means for forcing;` said bushings into engagement with the inner Wall ot said elianiber, a piston reciprocahly confined in said cylinder, and means operating to reciprocate said piston during the rotation of said cylinder for compressing fluid introduced into the cylinder through said inlet.

3. A Compressor comprising, in combination, a easing containing a Chamber having' a. Cylindrical wall provided with an inlet for the. fluid to be compressed. and With`an outlet for the compressed fluid, a rotary pistoneylinder in said chamber the inner surface o which toward its opposite ends is recessed lo ai'lord shoulders and is lined with se iarute moralile bushings havingr their outer ends conrexed and provided with shouldered portions on their periph'eries overlapping the shoulders on said cylinder, means operating against the shouldered port-ions of said rin js for forcing the latter into engagement at their ends with the Wall of said ,chainher, a piston reciprocably confined in isaid cylinder, and means operating .to reciprocate said piston during the rotation oli said cylinder for compressing fluid int-roduced into the cylinder through said inlet.

4. A compressor comprising, in combinw f a eylindi t lion, a casing containing a rhzunlier having a cylindrical wall provided with an inlet for the fluid to he compressed and with an outlet for the compressed fluid, a rotary piston-cylinder in said chamber, the inner snrlace ot` which is lined Wit-h separate movable bushings haring their outerends convened and presenting` surfaces extending at an angle to 'the path tl'iroug'h Which the piston reeiprocates. means operating;` against said angulorlyidisposed surface t ir forcing f the bushings into wigs-agement With the cylindrical .wall ot said chau'il'icr.v a piston reciprocahly contined in said cylinder, and means opi-'ruling' lo reciprocate said piston during the rotation ot said erlinder for compressing` `Huid introduced into the cylinder through said inlet.

A coifl'ukircssor con'iprisinrj, in coinhinzn tion-:1 c^ sing containing` a chamber having Y :al Wall provided with an inlet for the lluid to he conipressed and with un out-let for the compressed llulid.y a rotary piston cylinder in said chamber provided at its ends with ring-shal'ief'l members surrounding the opening lhroug'h said cylinder and coiirexed at. their outer. ends and adapted to bear against said cylindrical wall, a piston reciprocably confined in said cylinder, and means operating to reciprocate said piston during ating' to reciprocate said piston during the rotation ot' said cylinder for compress'ng fluid introduced into the cylinder throu h said inlet, and ring-shaped members provided on said cylinder and having their ends convened and provided with surfaces eX- tendingr at an angle to the path through ywhich the piston reciprocates adapted to be acted on hy the fluid as it is undergoing compression for forcing said meinhers at their outer ends against said cylindrical wall.

7. A compressor comprising, in combination, a casing,` containing a chamber having a cylindrical Wall provided with an inlet for the fluid to be compressed. and with an outlet for the compressed Huid, a rotary pistoncylinder in said chamber, a piston reciprocably confined in said cylinder, means operating; to reciprocate said piston during the rotation of said cylinder for compressing fluid introduced into the cylinder through said inlet, and bushings lining the inner surface of said cylinder having their outer ends convexed and presenting surfaces extending atan angle to the path through which the piston reciprocates, said bushings containing passages for permitting the Huid while undergoing compression to act against their angularly-disposed surfaces for forcing them against said cylindrical wall.

8. A compressor comprising, in combination, a casing containing a chamber having a cylindrical Wall provided with an inlet for the Huid to be compressed and an voutlet for the compressed fluid, a rotary piston-cylinder in said chamber, the inner surface ot' which toward its opposite ends is recessed outwardly to aord shoulders and is lined ermee with separate movable bushings having their" outer ends conveXed and provided with shouldered portions on their peripheries overlying the shoulders on said cylinder, said bushings containing passages opening intofthe interior of the bushings and into the joints between said opposing shouldered portions, a pist-on reciprocably confined in said cylinder, and means operating to reciprocate said piston during the rotation of said cylinder for compressing iuid introduced into the cylinder' through said inlet.

t JOHN LEvE-Y.

I In presence off- R. A. SCHAEFER, JOHN WILSON. 

